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-rw-r--r--src/Interpreter.ml15
1 files changed, 13 insertions, 2 deletions
diff --git a/src/Interpreter.ml b/src/Interpreter.ml
index 68b92361..a5d414aa 100644
--- a/src/Interpreter.ml
+++ b/src/Interpreter.ml
@@ -648,9 +648,20 @@ let region_in_set (r : T.RegionId.id T.region) (rset : T.RegionId.set_t) : bool
(** Return the set of regions in an rty *)
let rty_regions (ty : T.rty) : T.RegionId.set_t =
let s = ref T.RegionId.Set.empty in
- let add_region r = s := T.RegionId.Set.add r !s in
+ let add_region (r : T.RegionId.id T.region) =
+ match r with T.Static -> () | T.Var rid -> s := T.RegionId.Set.add rid !s
+ in
+ let obj =
+ object
+ inherit [_] T.iter_ty
- raise Unimplemented
+ method! visit_'r _env r = add_region r
+ end
+ in
+ (* Explore the type *)
+ obj#visit_ty () ty;
+ (* Return the set of accumulated regions *)
+ !s
let rty_regions_intersect (ty : T.rty) (regions : T.RegionId.set_t) : bool =
let ty_regions = rty_regions ty in